Add sources from iltrim hackathon#126276

Draft

MichalStrehovsky wants to merge 98 commits intodotnet:mainfrom

MichalStrehovsky:iltrim-rebased

Commits on Mar 24, 2026

First!
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Intial FieldDefinition support (#7)

LakshanF
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Add Support for NestedTypes (#8)

tlakollo
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Support for type ref and asm ref (#9)

tlakollo
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Add simple unit test support

agocke
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Typo

agocke
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Add back repro project

agocke
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One more typo

agocke
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Couple small tweaks (#11)
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Fix root build script (#14)
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Fix build of repro.csproj (#15)

vitek-karas
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Add support for custom attributes and member references (#20)

tlakollo
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Add TypeSpecification and MethodSpecification (#21)
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Scan method body for dependencies (#16)

vitek-karas
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Use body encoder instead of just blob builder for IL stream. (#23)

vitek-karas
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Port test infra from illinker (#25)

vitek-karas
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Draft PR to get FB (#24)

LakshanF
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Add support for Constant nodes (#27)

tlakollo
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Add ParameterNode (#29)

mateoatr
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Add support for GenericParameter and GenericParameterConstraint (#30)

tlakollo
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Add managed type system (#28)
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Add ILVerify checking (#31)

agocke
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Support for rewriting some of the signatures (#33)
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Fix several issues in build (#43)

vitek-karas
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Fix the IL verification tests (#44)

vitek-karas
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Better validation of instructions in tests (#45)

vitek-karas
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Add runtime assembly references (#46)

sbomer
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Add support for class layout (#47)

mateoatr
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Fix tests from cli (#49)

vitek-karas
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Fix bug in analyzing signatures with generic parameters in it (#51)
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Support for TypeSpec sginature (#48)

LakshanF
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Track virtual method usage (#42)
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Add support for field signature (#55)

tlakollo
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Field rva support (#56)

tlakollo
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The test class must match the file name (#63)

vitek-karas
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Add minimal support for multiple assemblies (#60)

agocke
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Fix where test temp files are written (#70)

vitek-karas
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Improve multi-assembly support (#69)

vitek-karas
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Implement function pointer signatures (#57)

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vitek-karas
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Support for MethodSpec signatures (#68)

LakshanF
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Fxi rewrite of "void *" type signature (#71)

vitek-karas
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Add support for exception regions (#62)

mateoatr
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Support for multi-dim array (#75)

LakshanF
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Add support for switch operation (#76)

agocke
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Add support for properties (#50)

sbomer
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Add parallelism for method body scanning and for module writing (#72)

vitek-karas
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Keep instance fields on types with explicit or sequential layout (#65)

mateoatr
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Remove unreachable method bodies (#77)

sbomer
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Handle function signature in a standalone signature token (#79)

vitek-karas
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Fix build (#81)

sbomer
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Start tracking interface uses (#66)
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Fix ConstructedType for generic base types (#82)

sbomer
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Keep fields on enums (#74)

mateoatr
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Ensure the finalizer is kept (#58)
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VERY rough version of sorting generic params (#84)

vitek-karas
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Work around S.R.Metadata bug (#87)
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Add support for events (#86)

tlakollo
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Small bugfix in ConstantNode (#93)
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Bugfix in ConstructedTypeNode (#95)
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Support for explicit field offset (#96)
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Partial static constructor support (#92)
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Make delegates work well enough (#91)
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Fix tests (#98)

vitek-karas
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Beginning of pinvoke support (#94)
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Support for ILLink.Descriptors.xml (#97)
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Use System.CommandLine for cmdline parsing (#99)

vitek-karas
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Preserve target of type reference (#101)

vitek-karas
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library mode baseic support (#102)

LakshanF
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Rewrite refs to type forwarders (#105)

sbomer
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Fix descriptor bug (#110)

agocke
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Always write -1 for offset of 0 RVA bodies (#111)

agocke
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Library mode should only act on public types (#108)

vitek-karas
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Implement analyzing and writing manifest resources (#112)

vitek-karas
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Start generating MethodImpl records (#120)
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Fix handling TypedReference (#119)
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Make it possible to run single-threaded (#118)
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Use much faster command line parsing (#106)

vitek-karas
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Consider types returned from p/invoke magically constructed (#121)
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Fix ordering of generic parameter constraints (#116)
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Add support for feature switches (#123)

vitek-karas
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Consider types with kept constructor constructed (#122)
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Fix NRE (#125)

agocke
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Hook up dataflow analysis (#114)
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Use Server GC like IL Linker does (#126)
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Avoid unnecessary allocations in MethodBodyNode (#127)
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Run ConstructedTypeNode analysis in multithreaded phase (#128)
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Commits on Mar 30, 2026